Ignition-spark intensifier



c.B.`EIvANs IGNITION SPARK AIN'IElIs-'IEIER Feb. 24o, 1923.- 1,445,931y

f Elled Nov) 6', 19g@ 1 A TTORNE Y BatentedpFeb. 20, 1923.

STTES N .I *1,445,937 1. OFFICE.. y,

CARL B. EVANS AND SYLVANUS S. KNIERIM, OF WICHITA, KANSAS.

IGNITION-SPARK INTENSIFIER.

Application fledvNovember 6, 1920. Serial No. 422,275.

To all whom t may concern Be it known that we, CARL B. EVANS and SYLvANUs S. KNInnnvr, citizens of the United States, and both residents of Wichita, in the county of Sedgwick and State of Kansas, have invented certain new and useful Improvements in Ignition-Spark Intensifiers, of which the following is a specification.

Cui' invention relates to that class of ignitio-nvspark intensiiers in which the principal feature of the device is an insulated gap between two terminals which are spaced a fraction of an inch apart where designed for the ignition circuits of automobile engines or in fact of any internal-combustion engine. Cui' invention provides a device of this kind, adapted to be made as a terminal for a distributer wire, at the spark-plug end of such wire. Our further object is to provide a device of the kind that be cheaply the ignition current.

Referring to the accompanying sheet of drawings: y v

Fig. l is a plan View or" the preferred form of our device with the yend of a distributerwire attached; Fig. 2 is a side view of the same; Fig. 3 is an opposite plan view; Fig'. 4 shows a modication.

In F 1, 2 and 3, numeral l indicates a thin oblong;l piece ot any suitable insulating' inaterial-preferably hard fibre. In one end of the piece a hole is punched and tapped. In this hole is placed a binding-screw 3. A liam-nut 4 prevents the screw being; jarred loose by the vibration of a motor car. Two otherholes are punched in the piece l to receive a pair of tacks 5, 6, the heads of which are so spaced as to provide a'sparkgap a, of the desired length. The form of tack which we prefer is made with a large slightly convex brass head. The stem of tack 5 is upset or swaged at 5 to hold the tack permanently in position.

Copper' rivets may be employed in lieu l of tacks.

the operator vwishes. to test the strength and voltage of A sheet-metal terminal ear or lug 7 is formed with a pair of lateral flaps 7 which are `foldedL around'the basev `l, oney lapped over the other, and perforated for the tack or rivet 6, which `is swaged as shown at 6 thereby fastening the terminal part securely to the base l.

The part 7 is provided .with van opening, adapted to be passed over the top screw of a `spark-plug; for plugs having a removable terminal nut, a hole 9 is preferable. F or plugs having an immovable top nut and an annularv groove cut to receive a terminal, an open slot as l0"isf`necessary: however such slotneed not be straight, as shown, as it may be offset lor ypinched as a retain'- ingl means. v

To put the device in use, for each cylinder of the motor. Connect one to each distributer-wire (l2) and attach the terminals to the respective spark-plugs.

By reference toI Figs.- l and 2 it one is provided will be observed that the head 5 adjacent the screw 43, is so located as to hold the loop of the wire under the head of the screw. Thisis a feature of improvement and, wethink, 'of novelty.

When the `engine is running' and the igni` tion functioning, there will be a visible series of sparks between each pair gap heads, provided that' the devices be vof spark#v shaded from too-bright sunlight when being inspected.` v

Havingdescribed our invention, what we claim, and desire to secure by Letters Patent, is:

A sparking device comprising athin, Hat, oblong plate of insulating material, a lsheetmetalspark-plug terminal, a headed mem ber 6 passing' thru said terminal and plate, a second headed member 5 passing thru said plate with its head .spaced from the head of the irst-nientioned headed member, a binding-screw threaded thru said plate in close proximity to the last named headed member, and a jam-nut on saidscrew at the opposite side of the plate from the head of said screw, said member 5 serving as a retainer for the looped end of a Conducting wire, substantially as described. 

